Don't tax Amazon. Tax Amazon's shareholders

Corporations dodge tax. So go for their owners instead.

Tax avoidance is a problem which stubbornly refuses to be fixed. Even just defining our terms is problematic, with nearly every definition wide-ranging enough to cover all avoidance also including things which nobody finds objectionable.

And even if you could define it well, there's the fact that tax avoidance is, by its nature, legal. While some avoidance is truly, obviously, taking advantage of sloppy phrasing in statutes and judicial rulings, most of it exists in the grey area where it would be impossible to "tighten up" the law without also removing those deductions or exemptions which were supposed to be there in the first place. (For an example of this in action, look no further than the pasty tax debacle.)

The worst tax avoidance is undoubtedly in the corporate sector. While there are terrible examples of avoidance amongst individuals, like the New Yorker's examination of hedge-fund manager Julian Robertson's tax affairs, they are always hampered by the fact that actually offshoring personal income – the most effective form of avoidance, and the hardest to fight with the law – is tricky. People, after all, have a physical location. Some may become the infamous "non-doms", but to do that you have to spend half the year outside the country. That isn't something which can be achieved by just hiring a canny accountant.

While moralising can convince the worst corporate offenders to pay their fair share – as Starbucks finally agreed to do – it can't work every time. Some companies don't care about their image, others manage to hide their avoidance.

And so we come back to patching up the holes in the system. But with offshoring, some holes seem nearly unpatchable. For all the stirling work of campaigners like UK Uncut and Tax Research UK, the world is still no closer to agreeing on the best way to deal with multinationals which engage in creative "tax planning".

But there's one possibility: forget about them.

The reason why involves looking at the concept of tax incidence. If you accept that the only question of tax that matters is which people pay it, then corporation tax becomes a complicated issue. As a tax alters the bottom line of a company, one of two things will happen: either it will pass the costs on, or it won't. If it doesn't, then the actual people hit by the tax are the shareholders of the company, who see its profitability decline. (This is largely the intended outcome of campaigns against tax dodging.)

But if it does past the costs on, then either its customers and employees must bear the brunt, in the form of increased costs or decreased wages, or other businesses (such as suppliers or contractors) do, and the whole equation starts again.

(It is important to point out that the argument that all costs must be levied on a person at some point is not without its critics. After all, businesses have savings, assets, property and rights; who is to say that they can't be counted as people for the purpose of taxation? And the assumption at the heart of the argument is one which must be taken as faith. It's just as easy to argue, using the same logic, that the costs of all personal taxation must be borne at some point by businesses.)

Tax incidence varies business-to-business and over time. In the early 70s, when it was starting up in Washington state, Starbucks' tax incidence was almost certainly mostly upon its shareholders. Labour was expensive, coffee was a niche product, and investors in a small start-up were probably in for the long haul. Now that Starbucks has access to vast pools of low-wage labour and customers willing to pay up to $7 for a cup, it is far more likely that they will bear the brunt of much excess tax. (Although, of course, as John Elledge rightly points out, even then, it's not certain; and if there's anything we've learned from Lisa Pollack's investigation into the matter at the FT, it's that Starbucks' publicity machine holds a lot of sway within the company)

But here's the thing: if we want to tax just the shareholders of a company, we already have a way to do it. We tax dividends, and we tax capital gains. Increasing those taxes hits the people we hope would take the brunt of corporation taxes anyway.

So here's my proposal: scrap corporation tax, and whack up those two to make up the revenue gap.

There would be two big transfers inherent in this change: the first would be from shareholders in companies which pay little tax to shareholders in companies which pay a lot of tax. Since that's just another way to say "cracking down on tax avoidance", it need not upset us too much.

The other is more uncertain. By and large, international companies have international ownership. Those based in Britain with the majority of their shareholders overseas would be better off; those based overseas with the majority of their shareholders in Britain would be worse off. If the logic of the Conservatives, who have already cut corporation tax significantly, holds, we can expect that latter group to move headquarters here to take advantage of the rates; and if it doesn't, then we can expect the shareholders to sell up and buy into British companies.

There's a reason CGT and dividend taxes are so low, of course, which is to encourage investment. But since we would expect pre-tax shareholder income to go up, investment ought to still be compelling. It would just be targeted more effectively at companies which could actually make a profit, rather than those which could only make a profit if they were avoiding tax which their competitors were not.

If we can stop the biggest corporations avoiding tax, we ought to. But if trying to tax aggregations of people which can twist across country borders with ease is permanently difficult, perhaps we ought to stop trying it, and do something better instead.

Photograph: Getty Images

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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Tom Watson rouses Labour's conference as he comes out fighting

The party's deputy leader exhilarated delegates with his paean to the Blair and Brown years. 

Tom Watson is down but not out. After Jeremy Corbyn's second landslide victory, and weeks of threats against his position, Labour's deputy leader could have played it safe. Instead, he came out fighting. 

With Corbyn seated directly behind him, he declared: "I don't know why we've been focusing on what was wrong with the Blair and Brown governments for the last six years. But trashing our record is not the way to enhance our brand. We won't win elections like that! And we need to win elections!" As Watson won a standing ovation from the hall and the platform, the Labour leader remained motionless. When a heckler interjected, Watson riposted: "Jeremy, I don't think she got the unity memo." Labour delegates, many of whom hail from the pre-Corbyn era, lapped it up.

Though he warned against another challenge to the leader ("we can't afford to keep doing this"), he offered a starkly different account of the party's past and its future. He reaffirmed Labour's commitment to Nato ("a socialist construct"), with Corbyn left isolated as the platform applauded. The only reference to the leader came when Watson recalled his recent PMQs victory over grammar schools. There were dissenting voices (Watson was heckled as he praised Sadiq Khan for winning an election: "Just like Jeremy Corbyn!"). But one would never have guessed that this was the party which had just re-elected Corbyn. 

There was much more to Watson's speech than this: a fine comic riff on "Saturday's result" (Ed Balls on Strictly), a spirited attack on Theresa May's "ducking and diving; humming and hahing" and a cerebral account of the automation revolution. But it was his paean to Labour history that roused the conference as no other speaker has. 

The party's deputy channelled the spirit of both Hugh Gaitskell ("fight, and fight, and fight again to save the party we love") and his mentor Gordon Brown (emulating his trademark rollcall of New Labour achivements). With his voice cracking, Watson recalled when "from the sunny uplands of increasing prosperity social democratic government started to feel normal to the people of Britain". For Labour, a party that has never been further from power in recent decades, that truly was another age. But for a brief moment, Watson's tubthumper allowed Corbyn's vanquished opponents to relive it. 

George Eaton is political editor of the New Statesman.